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The Local Microscale Reverse Deformation of Metallic Material under Laser Shock
Author(s) -
Lu Guoxin,
Liu Jide,
Qiao Hongchao,
Cui Chuanyong,
Zhou Yizhou,
Jin Tao,
Zhao Jibin,
Sun Xiaofeng,
Hu Zhuangqi
Publication year - 2017
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201600672
Subject(s) - materials science , shock wave , microscale chemistry , shock (circulatory) , laser , deformation (meteorology) , optics , interferometry , mechanics , composite material , physics , medicine , mathematics education , mathematics
A striking phenomenon is found that local plastic deformations, with an opposite direction to the external force, applied on metallic target surface under a given laser shock condition. Laser shock treatment is carried out on a number of metallic materials, and the surface topographies after laser shock treatment are observed via White Light Interferometer (WLI) measurement. The results show that many surface relief structures with irregular shapes and random distributions appear on target surfaces under the action of invisible shock waves. It personifies the real plastic flow behavior of metallic materials suffer to pressure waves, and the local reverse deformation.